1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
In a p-n junction photo cell, the value of the photo-electromotive force profuced by monochromatic light is proportional to
A
The barrier voltage at the p-n junction.
B
The intensity of the light falling on the cell.
C
The frequency of the light falling on the cell.
D
The voltage applied at the p-n junction.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is
A
1/2
B
1/$$\sqrt 2 $$
C
2
D
$$\sqrt 2 $$
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A ball is thrown vertically upward. It has a speed of 10 m/sec when it has reached one half of its maximum height. How high does the ball rise?
(Take g = 10 m/s2.)
A
10 m
B
5 m
C
15 m
D
20 m
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
The displacement x of a particle varies with time t as x = ae$$-$$at + be$$\beta $$t, where a, b, $$\alpha $$ and $$\beta $$ are positive constants. The velocity of the particle will
A
be independent of $$\beta $$
B
drop to zero when $$\alpha $$ = $$\beta $$
C
go on decreasing with time
D
go on increasing with time.
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